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1.
n. 1. Any or all insane persons with a tendency to write or say random things at inappropriate times.

n. 2. One who gets pleasure from wasting someone's time.
"Oh my God, concept1 needs to kill himself."

"That guy is so concept1, he doesn't have any real friends."

"Did you see concept1's girlfriend? She is hot!"
by Bryan Fury April 17, 2004